Lavatory cleansing block

Details Lavatory cleansing block Lavatory cleansing block

1982-08-17

1984-03-20

Kittle, John E.

Compositions

Water-softening or purifying or scale-inhibiting agents

252174, 25217421, 25217423, 424 76, 524376, 524377, 524378, 5253289, C11D 337, C11D 1700

Patent

active

044380151

ABSTRACT:
Improved lavatory cleansing blocks of the "naked" type and a process for preparing such blocks are disclosed. The lavatory cleansing blocks comprise as a solid carrier base a mixture comprising a major proportion of a nonionic surface-active compound and a minor proportion of a partially esterified copolymer of vinylmethyl ether and maleic anhydride (PVM/MA).
The lavatory cleansing blocks, which have improved solubility characteristics, a satisfactory gelling/swelling property for good sticking to the bottom of the cistern and a specific gravity of amply above 1, are used for immersion in the water of the cistern of lavatory bowls or urinals.

REFERENCES:
patent: 4043931 (1977-04-01), Jeffrey et al.
patent: 4082684 (1978-04-01), Kreischer
patent: 4269723 (1981-05-01), Barford

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